Exhaust-fan for vacuum-cleaners.



W. H. UPXON 6L O. STOLP.

UMH/WS? FAN FOR VACUUM CLEANERS. nwucmmm msn ocr. s. |912. fuiwso www s.19u.

W Mmmm, u, mw.

'llllilhlh El.. 'llPTtllll AND OSCAR STUD?, 0h' MEW TUHH, lil. Tf.

tpecicatlon et Letters lratent.

application tied october 5, loliaerial No. mama .henewed :tray a, lait.aerial tto. lottato.

States, and residents ot the borough of llt/lauf hattan, in the city andState ot New York,

`have invented a new and useful improvement in Exhaust-lh` ans forVacuum-Cleaners, ot which the following is a specicaimproved suctionmeans and also to provide The object ot ourinvention is to providecertain improvements in the construction, form and arrangement ot theseveral parts of the machine whereby the machine'is materiallysimplilied and access to its interior facilitated, without impairing itseiliciency. dome of the speciticnovel features of our invention are Theremoval ot the bottom of the vessel and its packed joint; the locationot the dust removal opening substantially hush with the bottom of thevessel; the removable door therefor and thepacked joint for the door;-ythe shape, construction and mountingl of the dust screen; the locationand arrangement oit the motor; and the location, torni and arrangementOt the exhaust 'tan or lans.

l practical embodiment ot the invention is represented in theaccompanying draw ings, in which,

lligure l represents the machine in. vertical central section,

lFig. 2 is a horizontal section talren in the ,plane olthe line A-h otFig. l and.

Fig. 3 is a horizontal section talren in the plane oit the line B-l otli`ig. l. The dust collecting vessel comprises a vertically arrangedcylindrical body portion l,

a top 2 and aibottom 3. The top 2 is remov ably secured to the bodyportion l, by suitable means, such as bolts and nuts Ll and 5., `Thebottom 3, is removably secured to the ,body portion l, by suitablemeans, such lor rat-tentent neo, ir, ism l movably secured in positionby suitable means, such as bolts and nuts 13 and lll. A packing l5 torthe door is provided to prevent the passage of air therethrough. The top2 ing 16.

The dust screen is composed oit a cloth l? stretched overa wire trame,comprising bowed cross pieces i8 and a circular piece 19. 'This screenis removably sprung into its position horizontally across the bodyportion l of the vessel, by providing the said body portion with anannular groove 20 arranged to receive the periphery ot said is providedvwith an air outlet openvor screen. l'lhisxscreen is placed within theves# sel with its convex tace pointing down wardly. This screen dividesthe vessel h'oriy zontally into upper and lower chambers,'the

`lower chamber being devoted to the collec-' tion of dust and the upperchamber being devoted to thevhousing ot; the motor and enhaust fans.`

- The :motorV 2l arms 2E; secured to the motor and also to thebodyportion l. The top 2 iso't such sine i is mounted ,with its shaft 22lair-ranged vvertically and centrally within they tio' as to permit a:tree escape ot the air up y wardly past the motor and out outletopening 16.

@ne or more exhaust fans are carried by the motor shaft 22. ln thepresent instance, we have shown two ot these fans, but it is to throughthe be 'understood that a greater or lesser number :may be employed itso desired. This tan comprises upper and lower disks 2d, 25, divergingfrom their peripheries toward their centers; one ot said disks, in thepresent instance the lower dish, having a central opening 2l',saiddislrs'being'spaced ,apart by alternating straight-and curved vanes28, 2li,

vinstance., as bolts and nuts o and "(,1 jh pack the-vanos 28'-eirtending troni the central ing d is located at the joint between thebody jopeningl,,outwardly-topoints a short dise.: portion l and thebottom '3, tor preventing )france[inwardly trom the peripher ot the;

the passage ot air therethrough; The ves.n4 p t'an and thelcurvedvanes29 entendinwardlyf`- sel is provided vwith a fdust and'fair` inlet`-lron1points"'iiifclose. proximity to the pe# roo voa

opening 9, which maybe connected toasuitw able nozzle, not shown herein,through a'pipe connection l0. This vvessel is lturthermore,provided'with a dust removal lopenirng'l 11,

located substantially tlueh-with`the bottom o, tor lacilitating theremoval ofthe `dust and dirt from the vessel.. vit door la is provided:tor this opening ll, which door is rey, ,riphery to `points-a distancetrom the 'saidgQ centraljopeningq .This arrangement' olfthese Y,

,--vanes and dislrafproduces a tanjhavinganf '1;411

close p ronimity to the lower exhausttan` and a s uw ar diaphragm 3l issecured withu fans.

I in the vessel below and in close proximity t'o the upper fan. Thesediaphragrns have central holes 32, 33 respectively for the passagetherethrough to the under side of the By making the dust screendownwardly convexed, we are enabled to provide f a substantial air spacebetween the screen and the lower diaphragm 30.

f l'The motor is herein shown as an electric motor, connected to a-source of energy, not

shown, through the conducting wires 34.

j In operation, when the motor is operated,

the fans carried thereby exhaustl the air from within the vessel, thusdrawing the .dustand dirt into the lower chamber. When desired, the door12 may berernoved for removal of the dust and dirt.

When it is desired to gain access to th interior of the vessel forthorough cleaning,

the' b0tto1n 3 may be removed; also the top 2 l and the screen anddiaphragms'as well as` the motor.

It' is evident that various changesmight f be resorted to in theconstruction, form and arrangement of the several parts without ldeparting from the spirit and scope of our inventioln hence we do notwish to limit ourselves strictly to the form shown and described, but

' What'lwe claim is:

"1; An exhaust fan for vacuum cleaners 'y comprising horizontallyarranged upper and lower disks, the lower disk having a central opening,radially straight vanes interj .lower disks gradually diverging from the45 periphery to the center, the lower disk having a central opening,radially straight vanes interposed between the disks and extendingoutwardly from the central opening to points within the periphery,`andvanes having radially straight inner ends between aforesaid vanes andspaced a distance from the opening and rearwardly curved outer endsextending to points nearer the .periphery than the said radiallystraight 55 vanes.

In testimony. that we claim the foregoing as our invention, we havesigned our names in presence of two witnesses, this second day ofOctober 1912.

WILLIAM H. UP'roN. OSCAR sToLP.

. Witnesses:

F. GEORGE BARRY, Oruro W. HOLMGREN.

